Eating a Mediterranean diet is good for the mind, research has concluded.

The research, by the University of Exeter's Medical School, is the first systematic review of previous studies into the diet's benefits to the brain.

It comes after research last month showed the same diet could help counteract a genetic risk of strokes.

The team, supported by the National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care in the South West Peninsula, analysed 12 eligible pieces of research, 11 observational studies and one randomised control trial.